From 662163163c21ef1b48dc1cf379402fc38ac2f0f7 Mon Sep 17 00:00:00 2001
From: Kefu Chai <tchaikov@gmail.com>
Date: Wed, 14 Dec 2022 08:20:42 +0800
Subject: [PATCH] cls/fifo: specialize fmt::formater<> for
 rados::cls::fifo::info

since fmt v9, fmt::formatter<> is not specialized for the types with
operator<<(ostream&, ...) anymore. so we need to specialize it manually.
in this change, fmt::formatter<rados::cls::fifo::info> is defined so
the tree can compile with fmt v9.

Signed-off-by: Kefu Chai <tchaikov@gmail.com>
---
 src/cls/fifo/cls_fifo_types.h | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/cls/fifo/cls_fifo_types.h b/src/cls/fifo/cls_fifo_types.h
index 13f479fe64ab9..856732bcb79ed 100644
--- a/src/cls/fifo/cls_fifo_types.h
+++ b/src/cls/fifo/cls_fifo_types.h
@@ -25,7 +25,9 @@
 #undef FMT_HEADER_ONLY
 #define FMT_HEADER_ONLY 1
 #include <fmt/format.h>
-
+#if FMT_VERSION >= 90000
+#include <fmt/ostream.h>
+#endif
 #include "include/buffer.h"
 #include "include/encoding.h"
 #include "include/types.h"
@@ -522,3 +524,10 @@ inline std::ostream& operator <<(std::ostream& m, const part_header& p) {
 	   << "max_time: " << p.max_time;
 }
 } // namespace rados::cls::fifo
+
+#if FMT_VERSION >= 90000
+template<>
+struct fmt::formatter<rados::cls::fifo::info> : fmt::ostream_formatter {};
+template<>
+struct fmt::formatter<rados::cls::fifo::part_header> : fmt::ostream_formatter {};
+#endif
-- 
2.39.5